Dynamo-electric machine.



J. W. JEPSON.

DYNAMO ELECTRIC MACHINE.

APPLICATION FILED MAY 8. 1913.

Patented Apr. 9, 1918.

INVE/VTUR [My/ WITNESSES WW fir UNITED STATES PATENT ornmn.

JOHN'WQJ'EPSON, F DEPENV, NEW YORK, ASSIGNOR T0 GOULD COUPLER COMPANY, A

i CQKPLRATTION 0F NEVJ YORK.

DYliQtzhhliD-ELECTEIG BIACHINE.

To all whom it may concern.

Be it known that 1, JOHN "ii finrson, a citizen of the United States, and a resident of Depew, Erie county, New .forlr, have invented certain new and useful Improvements in Dynarrodilectric Machines, of which the followi O a spec' c tion.

My 'ivention relates to improvemen s in dynamo electric machines, and more par icularly to a machine adapted to supply direct current for charging storage batteries and supplying lights on motor vehicles driven y'gas engines, and at the same time supplying high tension alternating current for the ignition of the engine.

Que object of the invention is to -pro vide a simple machine for accomplishing the above, which is not only compact and etlicient in service but is also easily and cheaply constructed. Further objects, features and advantages Will more clearly appear from the detail description, taken in connection with the accompanying drawings, in which- Figure 1 is a longitudinal section through a machine embodying the improvements in one form, and

Fig. 2 is a transverse section thereof.

Referring to the drawings, 1 represents a frame carrying the fixed field magnets 2 with the windings 3 thereon; 4: represents the laminations of a cylindrical drum-Wound armature structure held in place by cylindrical core ,5, end plates 6 and bolts "Z.

Projecting from the plates 6 are shafts 8 and 9 rotating in bearings 10 and 11 re spectively, carried by the frame 1. i The drum-Wound armature is provided With distributed windings 12 connected to a commutator 18 on the shaft 8 so that the drum- Wound armature is adapted to deliver or receive direct current.

Held in place by bolts 7 are laminations 14 forming, the magnetic structure of a shuttle-Wound high tension magneto armature having a shuttle winding thereon comprising two coils 15 and 16 separated by insulating means 17. The two coils are connected together and grounded tothe metal of the machine at 18.

The coils 15 and 16 are in transformer relation to one another, the coil 15 being a high resistance Winding adapted to be connected to and furnish high tension curnt to the ignition of the gas engine ough lead 19,- slip ring 20 and brush Q1,

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Specification of Letters Patent.

Patented Apr. $1, 1918..

' Application filed May 8, 1913. Serial No. 768,25?

of the machine. except to point out that the direct current drum armature and the high tension shuttle magneto armature, which is disposed within the drum armature, are both affected by and in operative rclation to tile same field magnets 53, although only part of the flux which passes through the drum armature passes through the shuttle armature. However, that portion oi the flux which does pass through the shuttle armature is amply suliicient to generate the necessary high tension alternating current for efficient sparking. I

By the arrangement described not. only are two machines combined in one in a most simple, cheap and etlicient manner, thereby eliminating or doing away Vith many parts, but at the same time all the advantages of the well known high tension magneto are retained without in any way decreasing the etficiency of the direct current end of the machine. 1

Although I have described my improvements in detail and with respect to one particular form thereof, nevertheless 1 do not desire to be limited to such details except as clearly specified in the appended claims, and many changes and modifications may Well be made without departing from the spirit and scope of myinvention in its broader aspects.

Having fully and clearly described my improvements, what I claim and desire to secure by Letters Patent, is:

l. A dynamo electric machine of the class described, hiwing field magnets, an armature structure with an armature Winding and commutator thereon for. delivering or receiving direct current, and a shuttle-Wound Winding on said armature for delivering high tension alternating current For ignition purposes, said shuttle Winding comprising a primary coil and a secondary coil in transformer relation thereto, said armature Windings being independent and aii'ected hy the magnetic field produced by the field magnets.

2. A dynamo electric machine of the class windings being independent and affected by the magnetic field produced by the field magnets.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JQHN \V. JEPSOJ.

Vitnesses C. FITZGERALD, P. ENGLISH. 

